Sterling NATURAL INDOOR GAS-FIRED DUCT FURNACE, Installation And Service Manual

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MODEL TYPE DESIGNATION
Figure 1 = Natural Vented (Standard) Duct Furnace (Bottom Access, Standing Pilot) (Optional Intermittent Pilot)
Figure 2 = Natural Vented Side Service Duct Furnace (Side Access, Standing Pilot) (Optional Intermittent Pilot)
Figure 3 = Power Vented Duct Furnace (Bottom Access, Rear Vent Position, Spark Ignition)
Figure 4 = Side Service Power Vented Duct Furnace (Side Access, Rear Vent Position, Spark Ignition)
TABLE OF CONTENTS
GENERAL SAFETY INFORMATION .............................................................................................................. 1, 2, 3
DUCT FURNACES (NATURAL AND POWER VENTED)
SPECIFICATIONS .................................................................................................................................. 4, 5
PERFORMANCE DATA .............................................................................................................................. 6
INSTALLATION
Location, Clearances ................................................................................................................. 7, 8
Ductwork, Air Flow, Ventilation, Bypass ......................................................................................... 8
Suspension .................................................................................................................................... 9
Electrical Connections .................................................................................................................. 10
Venting .............................................................................................................................11 thru 16
Gas Piping .................................................................................................................................... 17
Pipe Installation ............................................................................................................................ 18
OPERATION
Natural Vented Units with Standing Pilot ............................................................................... 19, 20
Natural Vented Units with Optional Intermittent Pilot ............................................................. 21, 23
Power Vented Units with Intermittent Pilot ............................................................................. 22, 23
Adjustments ........................................................................................................................... 24, 25
Orifice Sizing ................................................................................................................................ 24
MAINTENANCE ........................................................................................................................................ 25
COMPONENT PARTS .................................................................................................................. 26, 27, 28
TROUBLESHOOTING CHART ........................................................................................................... 29, 30, 31, 32
REPLACEMENT PARTS ....................................................................................................................................... 33
WARRANTY .......................................................................................................................................................... 33
START-UP/INSPECTION SHEET ......................................................................................................................... 35
GENERAL SAFETY INFORMATION
The duct furnace design is certified by CSA International
for use with natural and LP (propane) gases. ANSI and
NFPA Standards as well as Canadian installation codes
referred to in this manual are the ones that were
applicable at the time the design was certified. In addition,
the duct furnace may be installed on the downstream side
of a cooling unit, without need of a bypass duct.
If the unit is to be installed at an altitude exceeding 2,000
feet (610m) above sea level, derate the input by 4% for
each 1,000 foot (305m) rise above sea level. Special
orifices are required for installations above 2,000 feet
(610m).
When units are installed in Canada, any reference to
derations at altitudes in excess of 2000 feet (610m) are to
be ignored. At altitudes of 2000 to 4500 feet (610 to
1372m), the units must be orificed to 90% of the normal
altitude rating, and be so marked in accordance with the
CSA certification.
The following terms are used throughout this manual, in
addition to CSA requirements, to bring attention to the
presence of potential hazards or to important information
concerning the product:
Indicates an imminently hazardous
situation which, if not avoided, will result in death,
serious injury or substantial property damage.
Indicates an imminently hazardous
situation which, if not avoided, could result in
death, serious injury or substantial property
damage.
Indicates an imminently hazardous
situation which, if not avoided, may result in minor
injury or property damage.
NOTICE: Used to notify of special instructions on
installation, operation or maintenance which are
important to equipment but not related to personal
injury hazards.